KR970075295A - Abnormality detection device of fuel evaporation prevention device - Google Patents

Abnormality detection device of fuel evaporation prevention device Download PDF

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Publication number
KR970075295A
KR970075295A KR1019970017198A KR19970017198A KR970075295A KR 970075295 A KR970075295 A KR 970075295A KR 1019970017198 A KR1019970017198 A KR 1019970017198A KR 19970017198 A KR19970017198 A KR 19970017198A KR 970075295 A KR970075295 A KR 970075295A
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KR
South Korea
Prior art keywords
fuel
detecting
purge
abnormality
intake pipe
Prior art date
Application number
KR1019970017198A
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Korean (ko)
Other versions
KR100284730B1 (en
Inventor
슈이치 와다
Original Assignee
기타오카 다카시
미쓰비시 덴키 가부시키가이샤
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Application filed by 기타오카 다카시, 미쓰비시 덴키 가부시키가이샤 filed Critical 기타오카 다카시
Publication of KR970075295A publication Critical patent/KR970075295A/en
Application granted granted Critical
Publication of KR100284730B1 publication Critical patent/KR100284730B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/0809—Judging failure of purge control system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
    • F02D41/0032—Controlling the purging of the canister as a function of the engine operating conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
  • Testing Of Engines (AREA)

Abstract

본 발명은 이상 판정을 정확하고 안전하게 또한 위화감 없이 실행할 수 있는 연료증산 방지장치의 이상검출 장치를 얻는 것을 목적으로 하는 것으로서, 연료증산 방지장치의 이상판정시의 퍼지(purge) 제어량을 흡기관 압력 및 연료잔량에 따라서 조정하고, 이상판정 조건의 하나로서 캐니스터(canister)중의 연료가스 농도를 고려한다.An object of the present invention is to obtain an abnormality detection device for a fuel oxidant prevention device that can accurately and safely perform abnormality determinations, without any sense of incongruity. The fuel gas concentration in the canister is considered as one of the abnormal determination conditions.

Description

연료증산 방지장치의 이상 검출장치Abnormality detection device of fuel evaporation prevention device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 의한 연료증산 방지장치의 이상 검출 장치의 구성도, 제2도는 본 발명의 실시예 1에 의한 이상검출 처리를 도시한 흐름도, 제3도는 본 발명의 실시예 1에 의한 이상검출 처리의 변형예를 도시한 흐름도.FIG. 1 is a configuration diagram of an abnormality detection device of a fuel shedding prevention device according to the present invention, FIG. 2 is a flowchart showing an abnormality detection process according to the first embodiment of the present invention, and FIG. 3 is an abnormality according to the first embodiment of the present invention. A flowchart showing a modification of the detection process.

Claims (3)

연료탱크와 흡기관을 연결하는 퍼지통로(Purge Passage adapter)의 도중에 설치된 캐니스터(canister)의 흡착체로써 연료탱크내에서 발생된 연료가스를 수시흡착하여, 내연기관의 운전상태에 따라서 퍼지제어 밸브(Purge control valve)를 개폐함으로써, 상기 흡착된 연료가스를 흡기관내에 적절히 도입하여 연료의 증산를 방지하는 연료증산 방지장치와, 상기 내연기관의 운전상태를 검출하는 센서수단과, 상기 센서수단으로부터의 운전상태 정보에 근거하여 상기 연료증산 방지장치의 이상판정 조건의 성립을 검출하는 이상판정 조건 검출 수단과, 상기 캐니스터에 설치된 대기구를 닫는 대기구(air Port)폐쇄수단과, 상기 퍼지제어 밸브 및 대기구 폐쇄수단을 동시에 폐쇄하여 상기 연료증산 방지장치 전체를 하나의 밀폐구간으로 하는 밀폐화 수단과, 상기 연료탱크내 압력상태를 검출하는 연료탱크내 압력 검출수단과, 상기 연료탱크내 압력 검출수단의 검출결과에 근거하여 연료증산 방지장치의 이상을 검출하는 이상검출 수단과, 상기 흡기관 압력상태를 검출하는 흡기관 압력 검출수단과, 상기 이상판정 조건의 성립시는 상기 흡기관 압력상태에 따라서 방지량을 조정하는 퍼지량 조정수단을 구비하는 것을 특징으로 하는 연료증산 방지장치의 이상검출장치.An absorber of a canister installed in the middle of a purge passage adapter connecting the fuel tank and the intake pipe to adsorb the fuel gas generated in the fuel tank at any time, and purge control valve according to the operating state of the internal combustion engine. A fuel shedding prevention device for appropriately introducing the adsorbed fuel gas into the intake pipe by opening and closing the purge control valve, preventing the fuel from being increased, a sensor means for detecting the operating state of the internal combustion engine, and the operation from the sensor means. Abnormal determination condition detection means for detecting the establishment of an abnormal determination condition of the fuel evaporation preventing device based on the state information, an air port closing means for closing the waiting port provided in the canister, the purge control valve and the stand. A closing means for closing the mechanism closing means at the same time so that the entire fuel shedding prevention device is a closed section; and the fuel tank Pressure detection means in the fuel tank for detecting an internal pressure state, abnormality detection means for detecting an abnormality in the fuel oxidation prevention apparatus based on a detection result of the pressure detection means in the fuel tank, and intake pipe for detecting the pressure state of the intake pipe And an engine pressure detecting means and a purge amount adjusting means for adjusting the amount of prevention in accordance with the intake pipe pressure when the abnormality determination condition is established. 제1항에 있어서, 상기 연료탱크의 연료잔량을 검출하는 연료잔량 검출수단을 구비하며, 상기 이상판정 조건 성립시에는 상기 연료잔량 검출수단에 의해 검출된 연료 잔량에 따라서 상기 퍼지량 조정수단의 퍼지(Purge)량을 보정하는 것을 특징으로 하는 연료증산 방지장치의 이상검출장치.The fuel purge amount detecting means according to claim 1, further comprising fuel remaining amount detecting means for detecting a fuel remaining amount in said fuel tank, wherein when the abnormality determination condition is satisfied, purge of the purge amount adjusting means is made according to the remaining fuel amount detected by the fuel remaining amount detecting means. The abnormality detection device of the fuel shedding prevention device, characterized in that to correct the amount of (Purge). 제1항에 있어서, 상기 캐니스터로부터 상기 흡기관에 흘러 들어 오는 연료 가스의 농도를 검출하는 연료가스 농도검출 수단을 구비하며, 상기 연료가스 검출수단에 의해 검출된 연료가스 농도가 짙은 경우에는 상기 이상판정 조건을 불성립으로 하는 것을 특징으로 하는 연료증산 방지장치의 이상검출장치.The fuel gas concentration detection means for detecting the concentration of fuel gas flowing into the intake pipe from the canister, and the abnormality when the fuel gas concentration detected by the fuel gas detection means is high. An abnormality detection device for a fuel shedding prevention device, characterized in that the determination condition is not satisfied. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019970017198A 1996-05-07 1997-05-06 Abnormality detection device of fuel evaporation prevention device KR100284730B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11264596A JP3316376B2 (en) 1996-05-07 1996-05-07 Abnormality detection device for fuel evaporation prevention device
JP96-112645 1996-05-07

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KR970075295A true KR970075295A (en) 1997-12-10
KR100284730B1 KR100284730B1 (en) 2001-04-02

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US (1) US5758628A (en)
JP (1) JP3316376B2 (en)
KR (1) KR100284730B1 (en)
DE (1) DE19718766C2 (en)

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Also Published As

Publication number Publication date
JPH09296753A (en) 1997-11-18
DE19718766C2 (en) 2003-08-28
JP3316376B2 (en) 2002-08-19
DE19718766A1 (en) 1997-12-04
KR100284730B1 (en) 2001-04-02
US5758628A (en) 1998-06-02

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